<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <div id="box">
        <ul>
            <li v-for="(item,index) in list" :key="index">{{item}}--{{index}}</li>
        </ul>
    </div>
    <script src="vue.js"></script>
    <script>
        var vm = new Vue({
            el: '#box',
            data: {
                list: [11, 22, 33, 44, 55, 66]
            }
        })
    </script>
</body>

</html>